Description
Bayonet Type Straight RTD Sensor (Model APES) is a PT100 Class A temperature sensor engineered for accurate and repeatable temperature measurement in plastic extrusion, injection molding, blow molding, and other industrial process heating applications. It combines the precision of a PT100 RTD element with the convenience of a fixed 2-pin bayonet mounting system, making it an excellent choice for applications where measurement accuracy is more important than the extended temperature range offered by thermocouples.
Unlike rotating bayonet thermocouples, this sensor features a fixed 2-pin bayonet cap with a 14.10 mm outer diameter, providing a secure mechanical connection for compatible machine adapters. It also incorporates a 1/4″ BSP threaded adapter, allowing greater installation flexibility and compatibility with OEM equipment.
The Class A PT100 sensing element delivers highly accurate temperature measurement across a -50°C to 250°C operating range, making it ideal for controlling barrel zones, die heads, nozzles, hoppers, and other temperature-critical areas of plastic processing machinery. Its SS316 stainless steel probe offers excellent corrosion resistance and long service life, while the Teflon insulated cable provides resistance to heat, chemicals, and mechanical wear.
The Bayonet Type Straight RTD Sensor is widely used by machine manufacturers and maintenance teams for precision process control where stable and repeatable temperature measurement directly affects product quality, energy efficiency, and production consistency.
Key Features
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High-Precision Class A PT100 Element Delivers tight accuracy and linear signal response, essential for tight temperature windows in technical plastic molding.
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14.10mm OD 2-Pin Bayonet Cap Specifically sized 2-pin locking cap configuration designed to fit specialized industrial adapter studs seamlessly.
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1/4″ BSP Threaded Adapter Included Comes paired with a matching 1/4″ BSP male thread bayonet adapter stud for rapid mounting into pre-tapped machine walls.
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Spring-Loaded Surface Contact Heavy-duty spring maintains continuous mechanical pressure on the 5mm sheath tip, compensating for vibration and thermal expansion.
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Chemical-Resistant Teflon/Teflon Lead Cable 2-meter 3-wire Teflon cable insulation protects against chemical fumes, fluid splashes, and dielectric degradation up to 250°C.
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Slender 5mm SS316 Sheath SS316 stainless steel probe construction ensures fast thermal response times and corrosion resistance.
Applications
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Precision Plastic Extrusion Temperature regulation across extruder barrels, feed blocks, die heads, and melt pumps.
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Injection & Blow Molding Critical zone monitoring in hot runner manifolds, nozzles, and mold cavity plates.
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Thermoforming & Sheet Extrusion Exacting temperature feedback for delicate polymer sheet and film processing lines.
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Chemical & Pharmaceutical Processing Precision thermal tracking in small reactor jackets, vessels, and pilot plant equipment.
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High-Accuracy OEM Machinery Ideal upgrading choice for plastic machinery OEMs requiring RTD precision over standard thermocouple bayonets.
Datasheet
FAQs
1. What is a Bayonet Type Straight RTD Sensor?
A Bayonet Type Straight RTD Sensor is a PT100 Resistance Temperature Detector (RTD) that uses a fixed bayonet mounting mechanism to provide accurate, stable, and repeatable temperature measurement in industrial machinery. It is widely used in plastic processing equipment, packaging machinery, and industrial heating applications where precise temperature control is required.
2. Why choose a PT100 RTD instead of a Bayonet Thermocouple?
A PT100 RTD offers higher measurement accuracy, better repeatability, and excellent long-term stability over moderate temperature ranges. In comparison, bayonet thermocouples are generally preferred for higher-temperature applications, while PT100 RTD sensors are selected when precision and consistent temperature measurement are the primary requirements.
3. What is the advantage of a Fixed 2-Pin Bayonet Mounting?
A fixed 2-pin bayonet mounting provides secure mechanical retention and consistent sensor positioning. It is commonly used with compatible bayonet adapters, ensuring reliable thermal contact while simplifying sensor installation, removal, and replacement during maintenance.
4. What is the purpose of the 1/4″ BSP Adapter?
The 1/4″ BSP adapter provides an additional mounting option, allowing the sensor to be installed in equipment requiring a threaded process connection while still benefiting from the secure bayonet assembly. This improves installation flexibility across different industrial machines.
5. Where is a Bayonet Type Straight RTD Sensor commonly used?
Bayonet Type Straight RTD Sensors are widely used on plastic extrusion machines, injection molding equipment, blow molding systems, thermoforming machines, hot runner systems, packaging machinery, rubber processing equipment, and other industrial heating processes requiring precise temperature control.
6. What is the difference between a Bayonet RTD Sensor and a Bayonet Thermocouple?
A Bayonet RTD Sensor uses a PT100 sensing element to deliver higher measurement accuracy, better repeatability, and long-term stability within a moderate temperature range. In contrast, a Bayonet Thermocouple provides a wider operating temperature range but generally offers lower measurement precision than a PT100 RTD.
